LionheartDJH wrote:
I would suggest saving the game before you do it so if you do a second playthrough you don't have to do the prologue and act 1 again. I'll be returning at some point to take the other path and see how that plays out, looking forward to it.

Yeah that's a good suggestion.

There's no way to respec though so if you want to try a completely different witcher style on a next playthrough you'll have to start from scratch regardless.
But if you have the above save ready you can still decide there and then.